Witnesses testified that the company that operated an experimental deep-water submersible that imploded, killing five people, put profits over safety and ignored warning signs before the disaster.

Several company officials, meanwhile, spoke of the explorer spirit and taking calculated risks to push humankind含羞草研究社檚 boundaries.

Those different viewpoints emerged as the Coast Guard panel on Friday wraps up two weeks of testimony on the Titan disaster last year. The panel is tasked with determining why the carbon-fiber submersible was lost 12,500 feet (3,810 meters) deep on the ocean floor near the wreck of the Titanic.

Testimony painted contrasting images of greed and hubris as OceanGate sought out well-heeled clients for its submersible made from carbon fiber 含羞草研究社� a material that was untested at such depths 含羞草研究社� versus modern-day explorers who carefully considered risks as they sought to open the deepest depths of the world含羞草研究社檚 oceans to more people.

On Friday, Matthew McCoy, a Coast Guard veteran who served for several months as operations technician for OceanGate, also said he had safety concerns when he learned the company broke ties with the University of Washington含羞草研究社檚 applied physics lab, that Boeing wasn含羞草研究社檛 going to construct the carbon fiber hull, and that the thickness of the hull had been reduced.

He also had concerns about the financial model when he learned there would be paying passengers.

At a lunch meeting to raise concerns, OceanGate co-founder Stockston Rush told McCoy the vessel would be flagged in the Bahamas and launched from Canada to avoid U.S. regulations, McCoy said. McCoy said there could be U.S. regulatory concerns if it went to a U.S. port and Rush told him, 含羞草研究社淚f the Coast Guard became a problem, then he would buy himself a congressman and make it go away.含羞草研究社�

McCoy said it was a 含羞草研究社渢ense含羞草研究社� conversation and that he was 含羞草研究社渁ghast.含羞草研究社� He resigned.

Guillermo Sohnlein, who helped found OceanGate with Rush, described the lofty goal 含羞草研究社渢o give humanity greater access to the ocean, specifically the deep ocean.含羞草研究社� Using carbon fiber for the pressure hull was hardly a novel idea, he said, and noted Rush himself was the first human to test the design.

But former operations director David Lochridge said the company was committed only to profit making.

含羞草研究社淭he whole idea behind the company was to make money,含羞草研究社� he testified. 含羞草研究社淭here was very little in the way of science.含羞草研究社�

Witnesses could not even agree on what to call the wealthy clients who paid $250,000 for the experience. Some said they were simply passengers, even though OceanGate called them 含羞草研究社渕ission specialists含羞草研究社� who were given tasks.

Killed in the implosion were Rush and four others including , who was director of underwater research for RMS Titanic, which holds the legal rights to salvage the wreck of the ship. Nargeolet含羞草研究社檚 family is suing for more than $50 million, accusing the sub含羞草研究社檚 operator of gross negligence.

The carbon-fiber pressure hull of Titan was the subject of much of the discussion. An expert witness, Roy Thomas, senior principal engineer at the American Bureau of Shipping, testified that carbon-fiber may be strong and light, but that it含羞草研究社檚 tricky to manufacture. Carbon fiber also is 含羞草研究社渟usceptible to fatigue failure含羞草研究社� under repeated pressurization and salt water can weaken the material in multiple ways, he said.

Coast Guard officials noted at the start of the hearing, held in South Carolina, that the submersible had not been independently reviewed, as is standard practice.

Witnesses testified they had heard loud cracking sounds in past descents. And scientific director Steven Ross said that, on a dive just a few days before the Titan imploded, the vessel became unstable because of a ballast problem, causing passengers to tumble and crash into a bulkhead.

During its final dive on June 18, 2023, the crew lost contact after an exchange of texts as it descended. One of the last messages from Titan含羞草研究社檚 crew to the Polar Prince support ship before the submersible imploded stated, 含羞草研究社渁ll good here.含羞草研究社� The crew of Polar Prince, meanwhile, grew increasingly concerned.

Ships, planes and other equipment assembled for a rescue operation about 435 miles (700 kilometers) south of St. John含羞草研究社檚, Newfoundland. Wreckage of the Titan was subsequently found on the ocean floor about 330 yards (300 meters) off the bow of the Titanic, Coast Guard officials said.